Virtual Labs

In the two sample t-test problem, the population variance is to be estimated by using

a: difference between two sample mean squares Explanation

Explanation

b: sample mean square of first sample only Explanation

Explanation

c: sample mean square of second sample only Explanation

Explanation

d: mean square for pooled samples Explanation

Explanation

While testing the two sample t-test problem with samples of sizes n₁ and n₂ respectively, the test statistic follows

a: t distribution with n₁ df Explanation

Explanation

b: t distribution with n₂ df Explanation

Explanation

c: t distribution with (n₁+n₂-2) df Explanation

Explanation

d: t distribution with (n₁+n₂) df Explanation

Explanation

Hypothesis Testing Comparing Means of two populations : variances unknown but assumed equal